{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Disease", "Chemical"], "input": "A phase III clinical trial assessed the recurrence of adenomatous polyps after treatment for 36 months with difluoromethylornithine ( DFMO ) plus sulindac or matched placebos ."}
{"Disease": ["adenomatous polyps"], "Chemical": ["difluoromethylornithine", "DFMO", "sulindac"]}